//
// Manta - Structural Variant and Indel Caller
// Copyright (c) 2013-2019 Illumina, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
//

/// \file
/// \author Chris Saunders
///

#pragma once

#include <iosfwd>
#include <memory>
#include <mutex>

#include "boost/noncopyable.hpp"

void open_ifstream(std::ifstream& ifs, const char* filename);

/// use this class to set scope specific stream formatting
///
/// see unit test for example usage
///
struct StreamScoper {
  explicit StreamScoper(std::ostream& os);

  ~StreamScoper();

private:
  std::ostream&                  _os;
  std::unique_ptr<std::ofstream> _tmp_os;
};

/// Synchronizes access to a file stream from multiple threads:
class SynchronizedOutputStream : private boost::noncopyable {
public:
  explicit SynchronizedOutputStream(const std::string& outputFile);

  void write(const std::string& msg);

private:
  std::unique_ptr<std::ostream> m_osPtr;
  std::mutex                    m_writeMutex;
};
